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Finding the Fourth Proportional to 978,188.44, 1,349,882.92 and 548,467.24

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Solution

The fourth proportional to 978,188.44, 1,349,882.92 and 548,467.24 is: 756,875.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,188.44 : 1,349,882.92 = 548,467.24 : x
  2. Step 2: Convert to fraction form
    978,188.44/1,349,882.92 = 548,467.24/x
  3. Step 3: Cross multiply
    978,188.44x = 1,349,882.92 × 548,467.24
  4. Step 4: Simplify right side
    978,188.44x = 740,366,559,455.54
  5. Step 5: Solve for x
    x = 740,366,559,455.54/978,188.44
  6. Step 6: Final answer
    x = 756,875.19

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.